Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 3ae0899660f36aab2fd5dc8345f34932db259a4e
  - Add basic job for Kuberef verification

    Create a basic 'no-op' verification job for the kuberef project to
    cast "Verified+1" votes on patches.

    Also removes 'build-node' from the gerrit-info-yaml-verify job as that
    node does not exists in OPNFV.

    Change-Id: I8dea4306c3466cee02592d3e0745db1b33f85288
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 6cad49f..3ae0899 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 6cad49f28ff067dd3bec5664afa090734fef2740
+Subproject commit 3ae0899660f36aab2fd5dc8345f34932db259a4e